package com.atguigu.gulimall.product.service.impl;

import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.constant.ProductConstant;
import com.atguigu.common.to.SkuHasStockVo;
import com.atguigu.common.to.SkuReductionTo;
import com.atguigu.common.to.SpuBoundTo;
import com.atguigu.common.to.es.SkuEsModel;
import com.atguigu.common.utils.R;
import com.atguigu.gulimall.product.entity.*;
import com.atguigu.gulimall.product.feign.CouponFeignService;
import com.atguigu.gulimall.product.feign.SearchFeignService;
import com.atguigu.gulimall.product.feign.WareFeignService;
import com.atguigu.gulimall.product.service.*;
import com.atguigu.gulimall.product.vo.*;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.util.*;
import java.util.function.Function;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.product.dao.SpuInfoDao;
import org.springframework.transaction.annotation.Transactional;


@Service("spuInfoService")
public class SpuInfoServiceImpl extends ServiceImpl<SpuInfoDao, SpuInfoEntity> implements SpuInfoService {
    @Autowired
    private SpuInfoDescService spuInfoDescService;
    @Autowired
    private SpuImagesService spuImagesService;
    @Autowired
    private AttrService attrService;
    @Autowired
    private ProductAttrValueService productAttrValueService;
    @Autowired
    private SkuInfoService skuInfoService;
    @Autowired
    private SkuImagesService skuImagesService;
    @Autowired
    private SkuSaleAttrValueService skuSaleAttrValueService;
    @Autowired
    private CouponFeignService couponFeignService;
    @Autowired
    private CategoryService categoryService;
    @Autowired
    private BrandService brandService;
    @Autowired
    private WareFeignService wareFeignService;
    @Autowired
    private SearchFeignService searchFeignService;
    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                new QueryWrapper<SpuInfoEntity>()
        );

        return new PageUtils(page);
    }

    //TODO 高级部分
    @Transactional
    @Override
    public void saveSpuInfo(SpuSaveVo vo) {
        // 1、保存spu基本信息 pms_spu_info
        SpuInfoEntity spuInfoEntity = new SpuInfoEntity();
        BeanUtils.copyProperties(vo, spuInfoEntity);
        spuInfoEntity.setCreateTime(new Date());
        spuInfoEntity.setUpdateTime(new Date());

        this.saveBaseSpuInfo(spuInfoEntity);

        // 2、保存spu的描述图片 pms_spu_info_desc
        List<String> decript = vo.getDecript();
        SpuInfoDescEntity spuInfoDescEntity = new SpuInfoDescEntity();
        spuInfoDescEntity.setSpuId(spuInfoEntity.getId());
        spuInfoDescEntity.setDecript(String.join(",", decript));

        spuInfoDescService.saveSpuInfoDesc(spuInfoDescEntity);

        // 3、保存spu的图片集 pms_spu_images
        List<String> images = vo.getImages();

        spuImagesService.saveImages(spuInfoEntity.getId(), images);

        // 4、保存spu的规格参数信息 pms_product_attr_value
        List<BaseAttrs> baseAttrs = vo.getBaseAttrs();
        List<ProductAttrValueEntity> collect = baseAttrs.stream().map(baseAttr -> {
            ProductAttrValueEntity valueEntity = new ProductAttrValueEntity();
            valueEntity.setAttrId(baseAttr.getAttrId());

            AttrEntity byId = attrService.getById(baseAttr.getAttrId());
            valueEntity.setAttrName(byId.getAttrName());

            valueEntity.setAttrValue(baseAttr.getAttrValues());
            valueEntity.setQuickShow(baseAttr.getShowDesc());
            valueEntity.setSpuId(spuInfoEntity.getId());

            return valueEntity;
        }).collect(Collectors.toList());

        productAttrValueService.saveProductAttr(collect);

        // 5、保存spu的积分信息 gulimall_sms -> sms_spu_bounds
        // 需要远程调用其他服务
        Bounds bounds = vo.getBounds();
        SpuBoundTo spuBoundTo = new SpuBoundTo();

        BeanUtils.copyProperties(bounds, spuBoundTo);
        spuBoundTo.setSpuId(spuInfoEntity.getId());

        R r = couponFeignService.saveSpuBounds(spuBoundTo);
        if(r.getCode() != 0){
            log.error("远程保存spu积分信息失败");
        }
        // 6、保存spu对应的所有sku信息
        List<Skus> skus = vo.getSkus();
        if(skus != null && skus.size() > 0){
            skus.forEach(sku -> {
                // 6.1)、sku的基本信息 pms_sku_info

                //获取默认的图片
                String defaultImg = "";
                for (Images image : sku.getImages()) {
                    if(image.getDefaultImg() == 1){
                        defaultImg = image.getImgUrl();
                    }
                }
                //填充sku的基本信息，属性对拷
                SkuInfoEntity skuInfoEntity = new SkuInfoEntity();
                BeanUtils.copyProperties(sku, skuInfoEntity);
                //填充sku的基本信息，手动拷贝
                skuInfoEntity.setBrandId(spuInfoEntity.getBrandId());
                skuInfoEntity.setCatalogId(spuInfoEntity.getCatalogId());
                skuInfoEntity.setSaleCount(0L);
                skuInfoEntity.setSpuId(spuInfoEntity.getId());
                skuInfoEntity.setSkuDefaultImg(defaultImg);
                skuInfoService.saveSkuInfo(skuInfoEntity);


                // 6.2)、sku的图片信息 pms_sku_images

                Long skuId = skuInfoEntity.getSkuId();//保存后可以拿到回写的自增主键
                List<SkuImagesEntity> imagesEntities = sku.getImages().stream().map(img -> {
                    SkuImagesEntity skuImagesEntity = new SkuImagesEntity();
                    skuImagesEntity.setSkuId(skuId);
                    skuImagesEntity.setImgUrl(img.getImgUrl());
                    skuImagesEntity.setDefaultImg(img.getDefaultImg());

                    return skuImagesEntity;
                }).filter(entity -> {
                    //返回true就是需要，返回false就是剔除
                    return !StringUtils.isEmpty(entity.getImgUrl());
                }).collect(Collectors.toList());
                skuImagesService.saveBatch(imagesEntities);

                // 6.3)、sku的销售属性信息 pms_sku_sale_attr_value
                List<Attr> attr = sku.getAttr();
                List<SkuSaleAttrValueEntity> skuSaleAttrValueEntities = attr.stream().map(a -> {
                    SkuSaleAttrValueEntity skuSaleAttrValueEntity = new SkuSaleAttrValueEntity();
                    BeanUtils.copyProperties(a, skuSaleAttrValueEntity);
                    skuSaleAttrValueEntity.setSkuId(skuId);

                    return skuSaleAttrValueEntity;
                }).collect(Collectors.toList());
                skuSaleAttrValueService.saveBatch(skuSaleAttrValueEntities);

                // 6.4)、sku的优惠满减等信息 gulimall_sms -> sms_sku_ladder,sms_sku_full_reduction,sms_member_price
                // 需要远程调用其他服务
                SkuReductionTo skuReductionTo = new SkuReductionTo();
                BeanUtils.copyProperties(sku, skuReductionTo);
                skuReductionTo.setSkuId(skuId);
                // 无意义的优惠满减信息不保存
                if(skuReductionTo.getFullCount() > 0 || skuReductionTo.getFullPrice().compareTo(new BigDecimal("0")) == 1){
                    R r1 = couponFeignService.saveSkuReduction(skuReductionTo);
                    if(r1.getCode() != 0){
                        log.error("远程保存sku优惠信息失败");
                    }
                }


            });
        }


    }

    @Override
    public void saveBaseSpuInfo(SpuInfoEntity spuInfoEntity) {
        this.baseMapper.insert(spuInfoEntity);
    }

    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {

        LambdaQueryWrapper<SpuInfoEntity> wrapper = new LambdaQueryWrapper<>();
        //查询条件拼装
        String key = (String) params.get("key");
        if(StringUtils.isNotEmpty(key)){
            wrapper.and(w -> w.eq(SpuInfoEntity::getId, key).or().like(SpuInfoEntity::getSpuName, key));
        }

        String status = (String) params.get("status");
        if(StringUtils.isNotEmpty(status)){
            wrapper.eq(SpuInfoEntity::getPublishStatus, status);
        }

        String brandId = (String) params.get("brandId");
        if(StringUtils.isNotEmpty(brandId) && !"0".equalsIgnoreCase(brandId)){
            wrapper.eq(SpuInfoEntity::getBrandId, brandId);
        }

        String catelogId = (String) params.get("catelogId");
        if(StringUtils.isNotEmpty(catelogId) && !"0".equalsIgnoreCase(catelogId)){
            wrapper.eq(SpuInfoEntity::getCatalogId, catelogId);
        }

        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                wrapper
        );

        return new PageUtils(page);
    }

    /**
     * 商品上架
     * @param spuId
     */
    @Transactional
    @Override
    public void up(Long spuId) {
        // 1、查出当前spuId对应的所有sku信息、品牌的名字
        List<SkuInfoEntity> skuInfoEntities = skuInfoService.getSkusBySpuId(spuId);

        List<Long> skuIds = skuInfoEntities.stream().map(SkuInfoEntity::getSkuId).collect(Collectors.toList());

        //TODO 3、查出当前sku所有可以被检索的规格属性
        List<ProductAttrValueEntity> baseAttrs = productAttrValueService.baseAttrListForSpu(spuId);
        List<Long> attrIds = baseAttrs.stream().map(attr -> {
            return attr.getAttrId();
        }).collect(Collectors.toList());

        List<Long> searchAttrIds = attrService.selectSearchAttrIds(attrIds);

        Set<Long> set = new HashSet<>(searchAttrIds);
        List<SkuEsModel.Attrs> attrsList = baseAttrs.stream().filter(item -> {
            return set.contains(item.getAttrId());
        }).map(item -> {
            SkuEsModel.Attrs attrs = new SkuEsModel.Attrs();
            BeanUtils.copyProperties(item, attrs);
            return attrs;
        }).collect(Collectors.toList());

        // TODO:1、远程调用查询库存信息

        Map<Long, Boolean> stockMap = null;
        try {
            R r = wareFeignService.getSkuHasStock(skuIds);
            TypeReference<List<SkuHasStockVo>> typeReference = new TypeReference<List<SkuHasStockVo>>() {};
            stockMap = r.getData(typeReference).stream()
                    .collect(Collectors.toMap(SkuHasStockVo::getSkuId, SkuHasStockVo::getHasStock));
        } catch (Exception e) {
            log.error("库存服务查询异常：原因{}",e);
        }
        Map<Long, Boolean> finalStockMap = stockMap;


        // 2、封装每个sku的信息
        List<SkuEsModel> upProducts = skuInfoEntities.stream().map(sku -> {
            // 组装需要的数据
            SkuEsModel skuEsModel = new SkuEsModel();
            BeanUtils.copyProperties(sku, skuEsModel);

            //单独处理的字段
            // skuPrice、skuImg
            skuEsModel.setSkuPrice(sku.getPrice());
            skuEsModel.setSkuImg(sku.getSkuDefaultImg());

            // hasStock、hotScore 设置库存信息
            if(finalStockMap == null){
                skuEsModel.setHasStock(true);
            }else {
                skuEsModel.setHasStock(finalStockMap.get(sku.getSkuId()));
            }


            // TODO:2、热度评分。0
            skuEsModel.setHotScore(0L);

            // brandName、brandImg
            BrandEntity brand = brandService.getById(sku.getBrandId());
            skuEsModel.setBrandName(brand.getName());
            skuEsModel.setBrandImg(brand.getLogo());

            // catalogName
            CategoryEntity category = categoryService.getById(sku.getCatalogId());
            skuEsModel.setCatalogName(category.getName());

            // 设置检索的规格属性 attrs
            skuEsModel.setAttrs(attrsList);

            return skuEsModel;
        }).collect(Collectors.toList());

        //TODO 4、将数据发给es进行保存：gulimall-search
        R r = searchFeignService.productStatusUp(upProducts);
        if(r.getCode() == 0){
            //远程调用成功
            //TODO 5、修改当前spu的状态
            this.baseMapper.updateSpuStatus(spuId, ProductConstant.StatusEnum.SPU_UP.getCode());
        }else{
            // 远程调用失败
            // TODO 6、重复调用？接口幂等性问题？
        }

    }


}
